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NCP1217A - Enhanced PWM Current-Mode Controller

Download the NCP1217A datasheet PDF. This datasheet also covers the NCP1217 variant, as both devices belong to the same enhanced pwm current-mode controller family and are provided as variant models within a single manufacturer datasheet.

General Description

Pin No.

8 HV Ensures a clean and lossless startup sequence Description This pin lets you ad

Key Features

  • a high.
  • voltage startup FET, which ensures a clean and loss less startup sequence. Its current.
  • mode control topology provides an excellent input audio.
  • susceptibility and inherent pulse.
  • by.
  • pulse control. Internal ramp compensation easily prevents subharmonic oscillations from taking place in continuous conduction mode designs. When the current setpoint falls below a given value, e. g. the output power demand diminishes, the IC automatically enters the so.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (NCP1217_ONSemiconductor.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number NCP1217A
Manufacturer onsemi
File Size 302.59 KB
Description Enhanced PWM Current-Mode Controller
Datasheet download datasheet NCP1217A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
NCP1217, NCP1217A Enhanced PWM Current-Mode Controller for High-Power Universal Off-Line Supplies Housed in an SO−8 or PDIP−7 package, the NCP1217 represents the enhanced version of the NCP1203−based controllers. Due to its high drive capability, NCP1217 drives large gate−charge MOSFETs, which together with internal ramp compensation and built−in overvoltage protection, ease the design of modern AC/DC adapters. NCP1217 offers a true alternative to UC384X−based designs. With an internal structure operating at different fixed frequencies (65–100–133 kHz), the controller features a high−voltage startup FET, which ensures a clean and loss less startup sequence. Its current−mode control topology provides an excellent input audio−susceptibility and inherent pulse−by−pulse control.